I have to say, not keen on the consistency of okra personally. Love aloo gobi! To make a proper curry I'm afraid it can literally take all day
Yes, I've done it too years ago, first access exactly which spices you need, buy them whole from a proper Indian shop) measure accurately and dry fry. When cool, grind. Dice several onions and sweat for half an hour-ish in ghee (or just unsalted butter if you haven't prepared any ghee) Prepare the chicken, either joint it or dice the meat, flash fry in a couple of spoons of left over ghee but only to seal the outside of it, NOT to cook it through. You'll then need whatever prepared stock is needed in the recipe in a saucepan, add the spices meat, onions and whatever other veg and other ingredients are needed, bring up to a boil quickly, then simmer for a few hours with a tight fitting lid on the pan.
Hence I'd be much more likely to ring for a take away.
Some of Sharwoods curry sauces are OK, but in Pataks the raw chilli powder tang is not to my taste at all - you don't get that when you fry and grind yourself. Handily I used to have a coffee grinder attachment to my liquidiser and as we didn't ever grind our own coffee, the only things it ever got used for was grinding spices and making breadcrumbs!